102101120201005 has 4 divisors (see below), whose sum is σ = 122521344241212. Its totient is φ = 81680896160800.

The previous prime is 102101120200927. The next prime is 102101120201021. The reversal of 102101120201005 is 500102021101201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17000753500809 + 85100366700196 = 4123197^2 + 9224986^2 .

It is a de Polignac number, because none of the positive numbers 2^k-102101120201005 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102101120201005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10210112020096 + ... + 10210112020105.

It is an arithmetic number, because the mean of its divisors is an integer number (30630336060303).

Almost surely, 2^{102101120201005} is an apocalyptic number.

It is an amenable number.

102101120201005 is a deficient number, since it is larger than the sum of its proper divisors (20420224040207).

102101120201005 is an equidigital number, since it uses as much as digits as its factorization.

102101120201005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20420224040206.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 102101120201005 its reverse (500102021101201), we get a palindrome (602203141302206).

The spelling of 102101120201005 in words is "one hundred two trillion, one hundred one billion, one hundred twenty million, two hundred one thousand, five".